In the Star Trek: The Next Generation - Q Continuum novels, it is revealed that the Tkon Empire was destroyed after the being called 0, having "tested" the Tkon for the past few decades by inciting a civil war between the central Tkon homeworld and its outer colonies over the cost and effort necessary for the 'Great Endeavour' – a plan to replace their dying sun with a completely new star – triggered the collapse of their sun in a fit of pique after they survived his efforts and completed the Great Endeavour on schedule. This action resulted in 0's banishment from the galaxy by the Q Continuum, as well as the creation of the galactic barrier to prevent him ever returning. This also reveals that the Tkon were master solar engineers; at the moment when 0 triggered the destruction of their sun, they were about to teleport it completely out of their solar system, simultaneously replacing it with a new, fresh one, Q noting that the transporter array they were going to use to move the fresh star still exists in the present and recommending that Picard salvage it once he returns to his own time before someone else does.